What powers 
radio4.nl?
Last seen Jul 2018 · 3 technologies across 2 categories
JavaScript Frameworks
Web Servers
AI Crawlers
Blocks 1 of 33 AI crawlers we track by name in its robots.txt. Checked Nov 2026.
Training crawlers
- GPTBot Blocked
The other 32 AI crawlers we track are not mentioned and stay allowed by default.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
1 of 33 AI crawlers blocked
Open Page Rank
5.83 / 10 · ranked #125,365 of all domains
174 referring domains · OpenPageRank
Infrastructure
- Registered Jul 1999 (27 years) via NPO
- Hosted on PUBLIEKE-OMROEP-AS Stichting Nederlandse Publieke Omroep (145.58.30.3)
- DNS: npohosting.nl
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 519,856, 43 hosts
- Verified with: Microsoft 365, Trend Micro Email Security
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted